Sample
three 0.185.1: Skeleton.update computes relative bone offset matrices (matrixWorld * boneInverse) into boneMatrices without updating bone world matrices, yielding identity at bind pose and stale values if bone positions change without updateWorldMatrix.
Verified sample for npm three 0.185.1: Skeleton.update computes relative bone offset matrices (matrixWorld * boneInverse) into boneMatrices without updating…
sha256:0bdd6de0a3f959eb42df8777362de2ba7425a9cfc0a9fda626e5c54fef834531
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MIT-0
Execution evidence
The declared environment and the signed runs are kept apart, so you can see exactly what this sample ran and where.
- Evidence basis
- Signed contract pass
- Verification receipts
- 2
- Signing keys that built it
- 2
Declared environment
node linux x64 node node npm
Verification-run environments
| Environment | Contract | Stages | Run |
|---|---|---|---|
| node 22 · linux alpine/x64 · docker ed25519:d91480838ac982c9 | PASS | compile:SKIPPED · contract:PASS · load:PASS · resolve:PASS CONTAINER_RUN · node-typescript@1 |
2026-08-17 |
| node 22 · linux alpine/x64 · docker ed25519:2175b912ea1c23b1 | PASS | compile:SKIPPED · contract:PASS · load:PASS · resolve:PASS CONTAINER_RUN · node-typescript@1 |
2026-08-18 |
Case
HOW- Goal
- Skeleton.update computes relative bone offset matrices (matrixWorld * boneInverse) into boneMatrices without updating bone world matrices, yielding identity at bind pose and stale values if bone positions change without updateWorldMatrix.
- Packages
- Symbols
-
- THREE.Skeleton.update
- Environment
- node
- Created
- 2026-08-17T09:15:35Z
Contract
- Skeleton.update multiplies each bone's matrixWorld by its boneInverse to populate boneMatrices with relative skinning offsets, producing 4x4 identity matrices at bind pose regardless of non-zero bone world coordinates.
- Skeleton.update reads bone.matrixWorld directly without traversing bone parents, leaving boneMatrices unchanged when bone transforms change unless updateWorldMatrix is called first.
- Calling Skeleton.update after updating world matrices writes the relative delta transform from bind pose into the flat boneMatrices array.
- Skeleton.update sets boneTexture.needsUpdate to true and increments boneTexture.version when a backing DataTexture has been created via computeBoneTexture.
Files
- NOTES.md
- csx.json
- package-lock.json
- package.json
- test/contract.mjs